Test Engineer (AOI, SPI, X-Ray, PTH)

Flex is the diversified manufacturing partner of choice that helps market-leading brands design build and deliver innovative products that improve the world.

A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful inclusive and collaborative environment. If you are excited about a role but dont meet every bullet point we encourage you to apply and join us to create the extraordinary.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth were looking to add a Test Engineer located in Flex Aguascalientes.

Reporting to the Test Engineering Manager the Test Engineer will be responsible for supporting AOI testing and SMT process validation in a mixed shift environment. Troubleshoots and optimizes inspection systems. Collaborates directly with clients to address technical issues define requirements and provide solutions.

What a typical day looks like:

• Directs and/or coordinates inspection engineering and technical personnel in the setup development optimization and sustainment of inspection processes including AOI SPI X-Ray PTH inspection and Conformal Coating inspection systems.
• Directs and coordinates inspection engineering activities related to the development procurement installation qualification validation and calibration of inspection equipment and systems required to detect defects ensure product compliance and record inspection data.
• Interfaces and collaborates with manufacturing quality process and design engineering teams to resolve inspection-related issues such as escape defects false calls incomplete inspection coverage data interpretation discrepancies or equipment capability limitations.
• Evaluates analyzes and interprets inspection data including defect trends measurement results and yield indicators and prepares technical reports to support continuous improvement root cause analysis and management decision-making.
• Develops configures and maintains inspection programs algorithms libraries and recipes for AOI SPI X-Ray and Conformal Coating inspection systems to ensure robust defect detection and measurement accuracy.
• Trains and instructs production support personnel inspection technicians and operators on inspection equipment operation program usage defect identification acceptance criteria (IPC/Class requirements) and structured problem-solving techniques.
• Leads inspection yield improvement initiatives by performing root cause analysis coordinating corrective and preventive actions monitoring defect reduction effectiveness and optimizing inspection strategies.
• Performs and supports equipment verification qualification (IQ/OQ/PQ) and integration of inspection systems into production lines ensuring alignment with process requirements and quality standards.
• Creates updates and maintains inspection process documentation including work instructions control plans inspection criteria coverage definitions and equipment validation records.
• Actively researches and evaluates new inspection technologies methodologies and automation solutions to enhance defect detection capability measurement accuracy throughput and overall inspection effectiveness.
• Defines inspection conditions parameters acceptance criteria and inspection sequences throughout the manufacturing process ensuring appropriate inspection at each production phase and compliance with customer IPC and internal quality requirements.

The experience were looking to add to our team:

• Bachelors degree in electrical Electronics Manufacturing Industrial Engineering or related field.
• Experience in inspection engineering within electronics manufacturing environments.
• Strong technical knowledge of AOI SPI X-Ray inspection systems and defect detection methodologies.
• Experience with PTH inspection (barrel fill pin insertion lifted components) and Conformal Coating inspection (presence coverage thickness defects).
• Solid understanding of IPC standards and high-reliability product requirements (Class II / Class III).
• Experience in data analysis yield improvement and root cause analysis.
• Strong communication skills and ability to work cross-functionally.
• Ability to train and support technical and production personnel.
• Intermediate or advance English.

Skills / Competencies Nice to have:

• Knowledge of SPC FMEA Control Plans and Continuous Improvement methodologies.
• Experience supporting multi-product / high-mix production environments.
• Familiarity with inspection equipment vendors such as Koh Young ViTrox Magic-Ray Pemtron Nordson or similar.

What youll receive for the great work you provide:

• Competitive Salary.
• Life & Medical insurance.
• Christmas Bonus.
• Food Coupons.
• Saving Fund.

CP68

Job Category

Required Skills:

Optional Skills:

Flex is an Equal Opportunity Employer and employment selection decisions are based on merit qualifications and abilities. We do not discriminate based on: age race religion color sex national origin marital status sexual orientation gender identity veteran status disability pregnancy status or any other status protected by law. Were happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email and well discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex you must complete the application process first).